<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form action="http://localhost:5200/doregister" method="POST">  
        <h1>注册</h1>  
        <input type="text" name="username" placeholder="请输入用户名"><br>  
        <input type="text" name="password" placeholder="请输入密码"><br>  
        <button type="submit">注册</button>  
        </form> 
</body>
</html>